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E. M. COOK. VALVE FOB FIRE EXTINGUISHER SYSTEMS*- @7 i ,0MM

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(No Model.) E.'1V[. COOK.

` VALVE POP. PIRE BXTINGUISHBR SYSTEMS. No. 558,259. Patented Apr. 14, 1896.

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UNITED STATES PATENT OFFICE.

EMANUEL MANEY COOK, OF INDIANAPOLIS, INDIANA.

VALVE FOR FIRE-EXTINGUISHER SYSTEMS.

SPECIFICATIONIforming part of Letters Patent N O. 558,259, dated April 14, 18.96 Application filed July 8, 1895. Serial No. 555,240. (No model.)

T0 all whom it may con/cern:

Be it known that I, EMANUEL MANEY Cook,

a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Valves for Fire-Extinguisher Systems; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the main valve of an automatic sprinkler system of the so-called dry-pipe class.

The object of the mechanism constituting the invention is to prevent the flow of water from the main supply-pipe to the distributing-pipes so long as all the sprinkler-heads remain closed and to permit such flow immediately any one of said sprinkler-heads is opened.

The invention consists in the construction and combination of parts hereinafter described and claimed.

In the drawings, Figure l is a central vertical section of the main valve, its operating mechanism, and casing. Fig. 2 is a horizontal section on line 2 2 of Fig. l, the cone n and its nut n being removed. Fig. 3 is a vertical section of the right side of the casing and the valve-stem E and the device einployed for closing the valve C before the compressed air is pumped into the chamber.

Referring to the parts by letters, A represents the main-valve chamber, which is inclosed by a casing a. The inlet to the chamber is through the cylindrical opening a', with which in use the main supply-pipe is connected, and the outlet is through the opening a2, with which the main distributing-pipe is connected.

B represents an air-chamber, which is inclosed by a casing b. The two casings a and b are preferably secured together, and the two chambers communicate through the opening of port b. This communicating port h is closed by a disk-valve C, which when it has been drawn against its seat b2 is there held by pressure of air within said chamber B. b? represents pins fixed to the casing b and entering holes b4 in the valve, the purpose of said pins being to guide the valve in its movement squarely against or away from its seat. Y

The inlet to chamber A is closed by a valve D, which is cylindrical upon its under side, and this cylindrical part d lits the cylindrical opening a. Above the part d is an annular horizontal flange d', which is adapted to be held down against a finished seat d3 and thereby act as a disk-valve to completely close the inlet-opening.

A valve-stem E is attached to the middle of the valve C. It extends horizontally across the chamber A, and its end enters and slides in the guide e, which is secured to the valvecasing a. This stem is made in parts e' e2, the approximate ends of which are threaded and connected by a turnbuckle e3. Thepart e2 is broadened, and in this broadened part a slot e? is formed.

A valve-stem G is attached to the middle of the upper side of the-valve D and extends vertically therefrom, passing thro ugh the slot e4, and its upper end passes through a guide g, which is fastened to the casing a. A second stem g' is preferably secured to the under side of said valve and passes through a hole in the guide g3, which is secured to the casing a.

Upon the two stems E and G are the relatively adjustable inclines J and N, adapted to engage with each other in' substantially the manner shown, whereby the upward pressure of the water upon the valve D tends to push the incline J, with the result of transmitting pressure through the stem E against the valve O in opposition to the air-pressure therein in the chamber B. In the best construction known to me, which is shown in the drawings, the inclines J and N are formed and then relative adjustment isprovided for in the manner as follows: The end of the slot e4 next to the valve C is beveled upward away from said valve forming the incline J. On the valvestem G is a movable cone n, on the upper end of which is the incline N, the angle of which is complementary to the angle of the incline J. This cone is adjusted by means of the nut a', which may be screwed up and down upon the threaded stem G.

In order to make a more secure and firmer contact between the inclines J and N and to diminish the effect of the strain upon the IOO stems E and G, I also bevel the end of the slot c'L from the top downward and away from said valve C, forming the incline J', and I mount upon the stem G above stem E a second cone n2, the incline N of which is the complement of the incline J', with which it is adapted to engage. A nut n3, which is adjustable upon the threaded stem, is provided, so that the cone u? may be moved down into engagement with the incline J'.

A hand-hole f, which may be closed by a plate F, is made in the casing d and it is through this hand-hole that the parts Within the casing may be adjusted. In the casing at the end of the stem E a hole 7L is formed, which hole is normally closed by a plate II, bolted across it; but when it is desired to adjust the parts both plates Fand II are removed. An extension-piece K is screwed onto the end of the stem E. Anut k, which screws onto the piece K, bears against the casing a. As this n ut is screwed out the stem E is drawn to the right, thereby pulling the valve C against its seat. The valve D is then closed. The cones n and n2 are adj usted up and down, respectively, to bring the inclines N N' into contact with the inclines J J', which latter inclinesmay also be adjusted by means of the turnbuekle c3. Of course the water isshut off in the main supply-pipe during this operation. The chamber B and the distributingpipe system is now iilled with compressed air by the usual means, and preferably through the pipe L, which is connected in said distributing system, whereupon the valve C is held against its seat bythe air-pressure in chamber B. The extension K may now be removed from the stem E, and both'of the plates F and Il may bebolied to the casing a over the holes fand 7L.

A cheek-valve M, of anysuitable construction, is placed either in the outlet of chamberA or in the main distributing-pipe, wherebythe air in the distributing-pipes is prevented from entering the chamber A. In the particular construction shown this valveis a disk,which is seated by the air-pressure above it against an annular seat in the outlet-opening a2. The end of the valve-stem G enters a socket m in the under side of said valve, wherebythe opening of the valve I) causes the valve M to be opened.

When the water is turned onto the main, it presses against valve D; but the upward movement of said valve is resisted because of the engagement of the inclines J and N, and the movement of the incline J out of the path of incline N is resisted by the pressure in chamber B against valve C; but when this air-pressure is relievedas, for example, by the opening of any sprinkler-head-the valve C may be opened, and will be opened by the pressure of the incline N against the incline J. Then the valve C has been opened, as shown in dotted lines in Fig. l, the incline J has moved out of the way of the incline N, whereupon the valve D is opened wide by the Water from the main, as sh own by dotted lines in said figure. The Water flows through the casing a, filling the distributing-pipes and discharging in the usual manner through the open sprinkler or sprinklers.

Having described my invention, I claim- 1. The combination of a chamber A adapted for connection in the Water-supply pipe of an automatic sprinkler system, an air-chamber B communicating with chamber A, and a pipe for connecting chamber B with the distributing-pipe system, with a valve for the inlet to the chamber A, a valve for closing the communication between the two chambers, valvestems secured to said valves respectively, and relatively-adjustableinclines carried by said valve-stems and adapted to engage with each other, substantially as and for the purpose specified. i 2. The combination of a chamber Aadapted for connection with the'supply-pipe of an automatic sprinkler'system, an air-chamber B communicatingwith chamber A, and `a pipe, connecting chamber B With'the distributing system, with 'a valve` adapted to close the inlet to chamber B, a valve-stem `seeuredtosaid valve, and extending across the chamber A, means for guiding "said stem, a valve for closing the communication between said two chambers, a valve-'stem'secured to'said valve, lying substantially at right angles to the valve-stem iirstnamedfand composed of two parts which are adjustably connected, airincline secured toene of "said parts which `is remote from the valve, an adjustable incline, upon the valve-stem iirst named, which inclines are adapted te engagewith each other, and means for guiding thetwopart valvestem, substantially as and for the purpose specified.

3. The combination of a chamber A adapted for connection'with the supply-pipe of an automatic 'sprinkler system, an air-chamber B, communieatingwith chamber A, and apipe connecting chamberB 'With the distributingpipe systennwith avalve for 'closing the communication between said chambers, avalvestem secured thereto having a longitudinal slot with a beveled end, a valve for closing the inlet to chamber A, a valve-stem secured to said valve and passing through said slot, an incline adjustable upon the last-named stem and adapted to engage with the beveled end of said slot, and devicesr for engaging with said stems and guidingV them, substantially as and for the purpose speciiied.

4. The combination of a chamber A, adapted for connection in the supply-pipe of an automatic sprinkler system, an air-chamber B communicating with chamber A, and a pipe connecting the said air-chamber with the distributing syste1n,witl1 a valve for closingv the communication between said chambers, a valve -stem connectedwith said valve and `having a longitudinal slot, two oppositelybeveled surfaces atone end of said slot, a valve for closing the inlet to chamber A a valve- IOO IIO

stem secured thereto and two cones adjustable upon the valve-stem last named and adapted to engage with said beveled surfaces, and devices for guiding said stems, substantially as and for the purpose specified.

5. The combination of a chamberA adapted for connection with the supply-pipe of an automatic sprinkler system, an air-chamber communicating with the chamber A, and a pipe connecting the air-chamber with the distributing-pipe system, with a valve for closing the communication between said chambers, a valve-stem secured to said valve and composed of two parts, a turnbuckle for connecting said parts, a slot in the part remote from the Valve and two oppositely-beveled surfaces at the end of said slot, a valve for closing the inlet to chamber A, a valve-stem secured thereto, twocones adjustable upon said stem and adapted to engage with said beveled surfaces, and two yokes secured within the chamber A engaging with the ends of said Valve-stems respectively, substantially as and for the purpose specied.

6. The combination of a casing inclosing a chamber A, and adapted for connection in the supply-pipe of an automatic sprinkler system, a casing b secured to casing a and inclosing an air-chamber B, said casings having an opening through which the said chambers may communicate; the casing a having also an opening opposite to the opening through which the chambers communicate, and also a hand-hole through which the mechanism within chamber A may be reached, with a valve for closing the communication between said chambers, a valve-stem secured thereto having a threaded end, a yoke for guiding said.

EMANUEL MANEY COOK.

Witnesses:

ADDIE L. HARDY, MARIA E. MURRY. 

